In a world where character powers are limitless, as prescribed, how do you envision the RP going?  For instance, do you see this as a Player vs Player type of deal or will this be a Players vs NPCs thing?  To that extent, if powers are encouraged to be over the top, how do you envision presenting challenges that could possibly be otherwise toppled with the wave of a character's hand, figuratively (and possibly literally) speaking?

I know the plot line is being kept discreet, for now, but from a narrative aspect, what sort of things are the characters expected to do?  What does the journey look like, if only in broad strokes?

Certainly a bold and daring concept.  Just trying to get an idea for how it all works.